生活中随处可见很多草木，但自己却说不出名字，前段时间也去厦门植物园看了看，能够认识这些草木应该是一件快乐的事情。
我们总是忽视树木，但我们每天身体活动所需要的氧气都来自它们。又或许我们也许是植物眼中的「植物」，吸收植物不需要的成分，产生植物需要的二氧化碳。
此外，树的结构对人的很多心智模型有很大影响，分类、基本的认知，计算机中更是如此，文件树、文件历史树，以及家族的族谱树、生命的演化树、文明的进程树。
How lovely trees are. The human species grew up in and around them. We have a natural affinity for trees. Trees photosynthesize, they harvest sunlight, they compete for the sun’s favors. Look at those two trees over there, pushing and showing for sunlight, but with grace and astonishing slowness. There are so many plants on the Earth that there’s a danger of thinking them trivial of losing sight of the subtlety and efficiency of their design. There are great and beautiful machines, powered by sunlight, taking in water from the ground and carbon dioxide from the air and converting them into food for their use and ours.
— One Voice in the Cosmic Fugue, Cosmos: A Personal Voyage, 宇宙
桉树
乌桕树
凤凰树
缅栀花
炮仗花